Mailboxes for the lists you hand to clients

Picture the spreadsheet in front of you now. Each row was found by hand, checked against a company site, and tagged with where it came from. What you are short of is somewhere to send from. LocalSMTP supplies that part: standard SMTP and IMAP mailboxes you sign into, with browser webmail for the days you are away from your usual client.

The work you do with them is ordinary outreach. You write to a named person about a named role, on behalf of one client, and you need the reply to land back in a mailbox you control. Nothing in the tool builds that list for you. The mailbox is the delivery end of a process that begins with your own research and ends with a row a client can trace.

Warm-up and authentication checks sit alongside setup, which suits a contractor who changes clients and domains often. You configure, you check, you send. The lifetime purchase fixes your mailbox count rather than your sending volume, so the tier you pick should match the number of client identities you expect to run at once, not the size of any single campaign.

Count the mailboxes a smaller tier gives you against the clients you serve this quarter. A tier with five covers one contractor working for a handful of accounts or several sending identities for a single client. It does not stretch across every relationship you might want to run in parallel. When a new client arrives, someone gives way.

The ladder runs by mailbox count, so the step up to fifteen, and again to fifty, buys room rather than features you can measure in results. Each extra mailbox lets you keep a client's correspondence separate from the next, which matters when a client asks which messages went out under their name. Mixing clients in one mailbox is the cheaper habit and the harder one to defend.

Nothing below the top tier hands you more recipients. A larger count changes how many sending identities you juggle, not the number of people you reach. Read the tier as a seating plan for your client work and match it to real demand, because moving up later means paying again rather than paying the difference.

Your client's question is the one that decides whether they come back. They want to know where a row came from, and a mailbox cannot answer that. The tool gives you the means to send; the means to vouch for a contact stays with the spreadsheet, the source note and the check you ran yourself. Keep the two apart in how you present your work.

Inbox placement is not guaranteed either. Warm-up and authentication checks are useful signals and they are not a promise. Some messages will be filtered. Build the expectation into what you tell a client, and keep a second route for reaching anyone who matters, such as a follow-up through another channel they have already agreed to.

The other gap is pricing outside the mailbox count, which sits on its own terms. Before you quote a retainer, read the full published table and note which extras you will need. If you leave a line unpriced, the client relationship absorbs the surprise later, and that is the damage you were trying to avoid in the first place.

Set the three tiers side by side and ask which one matches the work you already have booked. Five mailboxes suits a solo contractor with a small set of clients and the discipline to keep identities clean. Fifteen suits someone juggling several accounts each month. Fifty suits the contractor sending on behalf of many clients at once.

The comparison that matters is not between the tiers alone. It is between a lifetime mailbox count and the alternative of renting sending capacity month after month. A lifetime tier trades a single payment for a fixed count you keep. If your client base grows past that count, the fixed number becomes the constraint, so estimate generously before you commit.

Then compare what each tier leaves you to do yourself. All three assume your own research, your own source records and acceptance that a filtered message is possible. None of them shortens the checking work. If you want the list building handled for you, this is the wrong product, and the honest comparison says so before you pay.