How Many Email Accounts You Need

Time: about 30 minutes to decide. Repeat: once a year, and on the day you are tempted to open another one.

Two mailboxes are enough for most people. A third earns its place only when it does one narrow job the first two genuinely cannot, and a fifth usually means a problem got solved by opening an account when a rule or a folder would have done it. What follows is the arithmetic: what an account costs to keep, which split survives contact with real life, and how to tell that one of yours has already died without telling you.

Count accounts, not addresses

The unit that costs you time is the account, not the address. An account has its own password, its own second factor, its own recovery codes, its own trash folder and its own inactivity clock. Every item on that list eventually asks something of you. An address on its own asks nothing.

The distinction matters because people describe the situation in addresses and then reason about it as though the answer were free. "I have six emails" usually turns out to mean six logins, six phone numbers on file with six providers, and six places where a security alert can sit unread for a year.

Price the account before you open it

Each account you keep costs a fairly predictable amount of maintenance, and it is worth naming that cost before agreeing to pay it. Roughly: a few minutes a month glancing at what arrived, a quarter of an hour on the day you change phone number and have to move the second factor across, another ten minutes when the provider changes how sign-in works, and an unscheduled half hour the first time a security notice arrives that you cannot ignore.

Call it about an hour a year for an account you actually use. That is cheap in itself. The trouble is that the hour is neither optional nor schedulable: it lands when the provider decides, usually while you are busy with something else. Four accounts means four of those interruptions, and each one is an opportunity to skim past a message that mattered.

A second cost appears later. Every account is one more place your other accounts can point to for recovery, and one more thing to update the day you move everything to a new address. Untangling two accounts is an afternoon. Untangling five is a project that needs a written list.

Split on recovery, not on topic

If you keep two accounts, draw the line in one place: the mailbox that can restore everything else, and the mailbox that carries the daily traffic. Nothing else about the split needs deciding.

The first one is the master key. Your bank, your domain registrar, your employer, your payment accounts and your other mailbox all point at it for password resets, which means whoever reads it owns the rest of your life online. It should be quiet by design: no newsletters, no shopping, no forums, nothing that trains you to skim. Because it is the master key, it also gets the strongest settings you have, and those are worth going through deliberately once rather than assuming they are on.

The second one absorbs everything else. Shops, services, subscriptions, the accounts you would shrug about losing. It can be noisy, because nothing depends on your noticing every message in it.

Solve the topic problem inside one account

Splitting mail by subject matter is a real need, and a second account is the most expensive way to meet it. Shopping, subscriptions and travel do not need separate logins, separate passwords and separate recovery paths. They need somewhere to land, which is what filing and search are for and what rules do automatically.

The comparison is not close. A folder costs one decision, once. An account costs a login, a second factor, a recovery route and a share of your attention forever, and it can be lost in ways a folder cannot.

Watch for the account that quietly dies

The typical extra account is opened with a purpose, is used for two months, and then stops being visited. Nothing dramatic happens for a long time. Two years later the provider deletes it under an inactivity policy, and by then several other services are still pointing at it for recovery, so the loss is not one mailbox but a chain of accounts that can no longer be recovered.

This is the failure mode to design against, because it takes so long to arrive that nobody connects the cause to the effect. An account that nobody reads is not dormant. It is on a countdown.

Keep the work mailbox out of the count

Your work address does not count as one of your mailboxes, because you do not own it. The employer can read it, archive it and take it back on your last day, and anything you attached to it leaves with it. Treat it as somebody else's system that you are temporarily allowed to use, and keep the line between work mail and personal mail drawn where it belongs.

The same goes for an address on a client's domain, a university address after graduation, and an address issued by an internet provider you may leave.

Test the scheme with one question

Ask it of every account you hold: do I sign into this at least once a month? An account that fails the test is either unnecessary, in which case close it deliberately, or important but neglected, in which case it is already on its way to being lost.

There is no third answer. Accounts do not survive on good intentions, and no scheme that requires you to remember to visit something will hold for five years.

A throwaway inbox sits outside all of this. It is not an account: no password, no recovery, no clock to watch, nothing to maintain. When a form wants an address for something that ends in five minutes, an inbox from this site costs you nothing to keep because there is nothing to keep. What it must never become is the recovery address on something real, and if that has already happened, it is worth acting quickly.

The checklist

• Name your two mailboxes: the one that restores everything else, and the one that does the daily traffic.
• Move anything financial, official or account-restoring onto the first, and keep it free of newsletters.
• For every extra account you hold, decide today whether to use it monthly or close it properly.
• Replace topic-based accounts with folders and rules in the mailbox you already read.
• Check what each mailbox is the recovery address for before you let any of them go quiet.
• Re-run this once a year, and whenever you change phone number.