I bought Tier 1 for cold email outreach and used the Done-for-You mailbox setup on my own .ro domains (yes, ccTLDs work fine).

What impressed me: DFY delivery was fast, 6 Gmail mailboxes live in well under the promised 24 hours, all correctly configured. I independently verified the DNS setup afterwards: SPF, DKIM and DMARC all properly configured, with individual DKIM keys per domain and a strict DMARC policy from day one. That's a cleaner setup than many agencies deliver. Support responded within hours, not days, and actually solved my problem: an abandoned order had locked my domains server-side, and they released it quickly once I reported it.

What to know before buying DFY: the mailboxes are locked to SalesBlink. 2FA is managed by them, no admin panel access and no recovery email on your own address. You're renting sending capacity operated through their platform, not buying mailboxes you fully control. I accepted that tradeoff knowingly (the price is roughly half of Google direct), but I'd have wanted this stated more clearly upfront.

Infrastructure-wise: does what it promises, at a price that's hard to argue with.